Improvement in governors for steam-engines



1. JUDSON.

v -Gove'r'nors for Steam-Engines.

No.l54,490. Patented Aug.25,1874-l A V I M V UNITED STATES PATENT QFFIOE JUNIUS J UDSON, OF ROCHESTER, NEW YORK.

IMPROVEMENT IN GOVERNORS FOR STEAM-ENGINES.

Specification forming part of Letters Patent No. 154,490, dated August 25,1874 application filed December 22, 1873.

To all whom it may concern:

Be it known that I, JUNIUS J UDSON, of the city of Rochester, in the county of Monroe and State of New York, have invented a certain new and useful Improvement in Governors for Steam-Engines; and I do hereby de-' clare that the following is a full, clear, and exact description of the construction and operation of the same.

The object of my improvement is to render the governor more sensitiveto the motion of the engine, and to produce the governing action with a smaller vertical motion of the balls.

The invention consists in combining with the balls springs within the same, surrounding the arms, and levers which rest against the balls, the arrangement being such that as the balls rise they are resisted by the reaction of the springs, as hereinafter described.

In the drawings, Figure 1 is an elevation of a governor with one ball in section to show my improvement. Fig. 2 is a section.

Ais the standard; B, the valve-rod; G G, the arms; and D D, the balls. These parts are similar to those in common use on the Judson governor-valve. A chamber, a, is made in each ball, of sufficient size to receive a coiled spring, E, which surrounds the arm C, and has a free play. The upper end of the spring rests against a shoulder, b, of the ball, while the lower end rests against a nut, c, which turns up and down on the arm 0. By this means the spring may have its tension increased or lessened at pleasure. G G are the levers, one of which is connected with each ball. The lower end rests loosely in an open socket, d, while the upper end is made concave, and embraces a fulcrum, f, of the standard-frame.

Instead of the connection of the levers with the ball and frame, as above described, any equivalent connection may be employed, by which the lever will be retained in place, and serve as a brace or stay against the balls in their upward action.

The operation will be readily understood. As the balls move upward under accelerated motion, they will be pressed outward by the levers, thereby increasing the tension of the springs, and resisting the rise of the balls.

This resistance increases in intensity as the balls rise higher. and higher.

By the arrangement above described, I am enabled to make the arms of the balls much shorter than usual, and thereby secure the same amount of governing action with a much less vertical motion of the balls. The governor is therefore more sensitive to the motion of the engine. and the governing action will be more uniform and regular.

I am aware that springs to which the balls are attached and operating by centrifugal action have been known; such I do not claim.

I claim- The combination, with the balls D D, of the interior springs E E and levers G G, operating substantially as and for the purpose specified.

In witness whereof I have hereunto signed name in the presence of two subscribing wit nesses.

Witnesses:

B. F. Oseoon, E. B. SooTT.

JUNIUS JUDSON. Y 

